High-Performance Organohydrogel Artificial Muscle with Compartmentalized Anisotropic Actuation Under Microdomain Confinement,Advanced Materials

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High-Performance Organohydrogel Artificial Muscle with Compartmentalized Anisotropic Actuation Under Microdomain Confinement
Advanced Materials ( IF 27.4 ) Pub Date : 2022-12-21 , DOI: 10.1002/adma.202202193
Longhao Zhang ₁ , Hao Yan ₁ , JiaJia Zhou ₂ , Ziguang Zhao ₁ , Jin Huang ₁ , Lie Chen ₁ , Yunfei Ru ₁ , Mingjie Liu _{1,

3}

Affiliation

Current hydrogel actuators mostly suffer from weak actuation strength and low responsive speed owing to their solvent diffusion-induced volume change mechanism. Here a skeletal muscle-inspired organohydrogel actuator is reported in which solvents are confined in hydrophobic microdomains. Organohydrogel actuator is driven by compartmentalized directional network deformation instead of volume change, avoiding the limitations that originate from solvent diffusion. Organohydrogel actuator has an actuation frequency of 0.11 Hz, 110 times that of traditional solvent diffusion-driven hydrogel actuators (<10⁻³ Hz), and can lift more than 85 times their own weight. This design achieves the combination of high responsive speed, high actuation strength, and large material size, proposing a strategy to fabricate hydrogel actuators comparable with skeletal muscle performance.

中文翻译：

在微域限制下具有分区各向异性驱动的高性能有机水凝胶人造肌肉

由于溶剂扩散引起的体积变化机制，目前的水凝胶致动器大多存在致动强度弱和响应速度慢的问题。这里报道了一种受骨骼肌启发的有机水凝胶致动器，其中溶剂被限制在疏水微区中。有机水凝胶致动器由分隔的定向网络变形而不是体积变化驱动，避免了溶剂扩散带来的限制。有机水凝胶致动器的致动频率为 0.11 Hz，是传统溶剂扩散驱动水凝胶致动器的 110 倍（<10 ^-3 赫兹），并且可以举起超过自身重量 85 倍的重量。该设计实现了高响应速度、高驱动强度和大材料尺寸的结合，提出了一种制造可与骨骼肌性能相媲美的水凝胶驱动器的策略。

更新日期：2022-12-21

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